1N4751AHR1G

Overview

The Taiwan Semiconductor 1N4751AHR1G is a single-channel Zener diode designed for voltage regulation applications. It features a nominal Zener voltage of 30 V with a tolerance of ±5%. The device supports a maximum power dissipation of 1 W and operates within a temperature range from -65°C to +200°C. Key electrical parameters include a test current of 8.5 mA, a maximum Zener impedance of 40 Ω, and a maximum reverse leakage current of 5 μA. It is housed in a DO-41 through-hole package.

Feature Summary

• Provides stable voltage regulation across a broad operating current and temperature range
• Features high reliability construction suitable for demanding environments
• Utilizes glass hermetic sealing for enhanced durability

Applications

• Voltage regulation circuits requiring high reliability
• Protection against overvoltage conditions
• Reference voltage sources in precision electronics

Procurement Notes

Verify the specific suffix HR1G against official Taiwan Semiconductor documentation to confirm exact manufacturing lot details and compliance status. Ensure the procurement channel provides valid traceability for this high-reliability variant. Cross-reference the part number with authorized distributors to confirm current availability and authenticity before finalizing orders.

Selection Notes

Select this component when a 30 V regulation point is required with strict tolerance limits. The DO-41 package facilitates through-hole mounting, while the extended temperature range supports operation in harsh conditions. Compare the 40 Ω impedance and 1 W power rating against circuit requirements to ensure adequate performance margins under load.

Part Context

This part belongs to the 1N4751 series of Zener diodes, which are widely used for general-purpose voltage regulation. The 1N4751 designation corresponds to a 30 V nominal voltage. Variants such as the 1N4751A offer tighter tolerances, while specialized prefixes may indicate military-grade screening or specific packaging options like MELF or plastic encapsulation.

Replacement Considerations

Compatible substitutes include the onsemi 1N4751A and Fairchild 1N4751A-T50A, which share identical 30 V, 1 W, and DO-41 specifications. Microsemi offers equivalent parts such as MX1N4751APTR and MSP1N4751AURTR for different packaging needs.